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Oxidative dehydrogenation of n-butane to butenes on Mo-doped VMgO catalysts
Liu, Xue1,2; Duan, Linhai1; Yang, Weishen2; Zhu, Xuefeng2
刊名RSC ADVANCES
2017
DOI10.1039/c7ra04936f
7期:54页:34131-34137
收录类别SCI
文章类型Article
WOS标题词Science & Technology ; Physical Sciences
类目[WOS]Chemistry, Multidisciplinary
研究领域[WOS]Chemistry
关键词[WOS]SUPPORTED VANADIUM-OXIDE ; MG-O CATALYST ; SELECTIVE OXIDATION ; V/MGO CATALYSTS ; PERFORMANCE ; ALUMINA ; OLEFINS ; MOLYBDENUM ; 1-BUTENE ; SIZE
英文摘要VMgO catalysts with different molybdenum doping amounts were prepared by an impregnation method. The structure, specific surface area, and basic and redox properties of these catalysts were determined by XRD, BET, CO2-TPD, and H-2-TPR. The XRD results revealed that all catalysts contained an orthovanadate phase (Mg-3(VO4)(2)), while no metavanadate and pyrovanadate phases were detected. BET surface area analysis showed that the Mo-doped catalysts possessed lower surface areas than the undoped one. The reducing and basicity properties of the catalysts were characterized by H2-TPR and CO2-TPD measurements, which demonstrated that Mo-doping improved the redox temperature and reduced the number of basic sites. The performances of these catalysts were investigated at different C4H10/O-2 molar ratios, temperatures, and contact times. The Mo-doping not only improved the selectivity of butenes but also inhibited the deep oxidation reactions, although cracking reactions occurred with high levels of Mo doping. When the Mo/V atomic ratio was 3 : 100, n-butane conversion of 34.5% and total butene selectivity of 79.3% were achieved at 630 degrees C. To the best of our knowledge, the oxidative dehydrogenation performance of the synthesized Mo-doped VMgO catalysts described in this work represents a remarkable improvement compared to previous reports.
语种英语
WOS记录号WOS:000405279100055
引用统计
文献类型期刊论文
条目标识符http://cas-ir.dicp.ac.cn/handle/321008/152038
专题中国科学院大连化学物理研究所
作者单位1.Liaoning Shihua Univ, Coll Chem Chem Engn & Environm Engn, Fushun 113001, Peoples R China
2.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China
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GB/T 7714
Liu, Xue,Duan, Linhai,Yang, Weishen,et al. Oxidative dehydrogenation of n-butane to butenes on Mo-doped VMgO catalysts[J]. RSC ADVANCES,2017,7(54):34131-34137.
APA Liu, Xue,Duan, Linhai,Yang, Weishen,&Zhu, Xuefeng.(2017).Oxidative dehydrogenation of n-butane to butenes on Mo-doped VMgO catalysts.RSC ADVANCES,7(54),34131-34137.
MLA Liu, Xue,et al."Oxidative dehydrogenation of n-butane to butenes on Mo-doped VMgO catalysts".RSC ADVANCES 7.54(2017):34131-34137.
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